ethyl 3-O-(4-methoxybenzyl)-β-D-galactopyranoside | 183051-69-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: ethyl 3-O-(4-methoxybenzyl)-β-D-galactopyranoside
• CAS: 183051-69-6
• 化学式: C₁₆H₂₄O₇
• 分子量: 328.362
• InChiKey: UOTGNPLGVATBHE-DGADGQDISA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.06
• 重原子数：
  23.0
• 可旋转键数：
  7.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.62
• 拓扑面积：
  97.61
• 氢给体数：
  3.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  ethyl 3-O-(4-methoxybenzyl)-β-D-galactopyranoside 在 甲醇 、 calcium sulfate 、 N-碘代丁二酰亚胺 、 ammonium cerium(IV) nitrate 、 三氟甲磺酸 、 4 A molecular sieve 、 左旋樟脑磺酸 、 sodium methylate 、 silver perchlorate 、 sodium hydride 、 一水合肼 、 silver carbonate 作用下， 以 甲醇 、 乙醇 、 二氯甲烷 、 水 、 甲苯 、 乙腈 为溶剂， 反应 86.67h， 生成
  参考文献：
  名称：

  A highly practical synthesis of the sialyl Lewis X pentasaccharide and an investigation of binding to E-, P-, and L-Selectins

  摘要：

  A practical synthesis of the sialyl Lewis X (sLe(x)) pentasaccharide, NeuAc alpha 2-3Gal beta 1-4(Fuc alpha 1-3)GlcNAc alpha 1-3Gal beta OEt (1), as a potential blocker for E-selectin has been described. The glycosylation of a trisaccharide acceptor, Fuc alpha(1-3)GlcNAc beta(1-3)Gal beta OEt, with a disaccharide donor, NeuAc alpha(2-3)Gal beta SMe, did not yield the desired sLe(x) pentasaccharide 1 at all. However, the glycosylation of a disaccharide acceptor, GlcNAc beta(1-3)Gal beta OEt, with a disaccharide donor, NeuAc alpha(2-3)Gal beta SMe, quantitatively yielded the tetrasaccharide NeuAc alpha(2-3)Gal beta(1-4)GlcNAc beta(1-3)Gal beta OEt. This tetrasaccharide is readily converted to the title compound in a high yield by fucosylation, followed by deprotection. The inhibitory activities of compound 1 toward the binding of the natural ligand (sLe(x)) with the E-, P-, and L-selectins were stronger than those of the sLe(x) tetrasaccharide. Copyright (C) 1996 Elsevier Science Ltd

  DOI：

  10.1016/0968-0896(96)00105-8
• 作为产物：
  描述：

  ethyl β-D-galactopyranoside 、 4-甲氧基氯苄 在 4 A molecular sieve 、 四丁基溴化铵 、 二正丁基氧化锡 作用下， 生成 ethyl 3-O-(4-methoxybenzyl)-β-D-galactopyranoside
  参考文献：
  名称：

  A highly practical synthesis of the sialyl Lewis X pentasaccharide and an investigation of binding to E-, P-, and L-Selectins

  摘要：

  A practical synthesis of the sialyl Lewis X (sLe(x)) pentasaccharide, NeuAc alpha 2-3Gal beta 1-4(Fuc alpha 1-3)GlcNAc alpha 1-3Gal beta OEt (1), as a potential blocker for E-selectin has been described. The glycosylation of a trisaccharide acceptor, Fuc alpha(1-3)GlcNAc beta(1-3)Gal beta OEt, with a disaccharide donor, NeuAc alpha(2-3)Gal beta SMe, did not yield the desired sLe(x) pentasaccharide 1 at all. However, the glycosylation of a disaccharide acceptor, GlcNAc beta(1-3)Gal beta OEt, with a disaccharide donor, NeuAc alpha(2-3)Gal beta SMe, quantitatively yielded the tetrasaccharide NeuAc alpha(2-3)Gal beta(1-4)GlcNAc beta(1-3)Gal beta OEt. This tetrasaccharide is readily converted to the title compound in a high yield by fucosylation, followed by deprotection. The inhibitory activities of compound 1 toward the binding of the natural ligand (sLe(x)) with the E-, P-, and L-selectins were stronger than those of the sLe(x) tetrasaccharide. Copyright (C) 1996 Elsevier Science Ltd

  DOI：

  10.1016/0968-0896(96)00105-8